Yield of electrons with fixed energy losses from Si (111) bombarded with E/sub p/ = 20--300 eV electrons

The dependences of the yield of inelastically scattered electrons which suffered different but fixed energy losses, on the primary electron energy were obtained and compared with the energy dependences of the elastic reflection coefficient and its derivative. The two types of dependence were basically similar except that the yield curves showed more clearly certain singularities particularly at primary energies below 50 eV. The yield curves exhibited a hyperfine a hyperfine structure which was independent of the energy losses